F16 vs. f1.4 DFA* 50

One to show a shot from several feet away at f1.4. There is a bit of distracting bright blurry driftwood in the background. It was not easy to focus perfectly on the dog's face. Live view worked best. Then a simple shot to show the star effect at f16.

nice torture test for the lens. There is a slight amount of fringing here, it can only be seen in the 100% crop - but I can think of lenses Pentax has made* that would have done far worse considering the extreme contrast..

*The SMCP-FA 77mm f/1.8 limited springs to mind, that dogs nose would have been fringed with purple.

Three issues were at play. Very low depth of field, a very dark face with bright white fur in other areas, and typical dog movement. In this case I had better luck focusing on her eye with live view. Sometimes contrast detect can be more precise.